Abstract: The present invention relates to a method for producing polyether carbonate polyols, the polyether carbonate polyols having electron-poor and electron-rich double bonds, said method preferably comprising the steps of (a) providing a suspending agent and/or an H-functional starter compound and a DMC catalyst, 03) adding at least one epoxide and (y) adding carbon dioxide, an epoxide that does not contain an unsaturated group, and at least two unsaturated compounds, the unsaturated compounds in method step (y) being selected from the group comprising unsaturated epoxides and unsaturated cyclic anhydrides, and one of the unsaturated compounds having an electron-rich double bond and one of the unsaturated compounds having an electron-poor double bond. The invention also relates to the crosslinking of polyether carbonate polyols, the polyether carbonate polyols having electronpoor and electron-rich double bonds, and to the crosslinked polyether carbonates obtainable therefrom.

Abstract: The present invention relates to a method for producing higher functional polyether carbonate polyols, said method preferably comprising the steps of ([alpha]) providing a DMC catalyst and; ([alpha][alpha]) a suspending agent that does contain any H-functional groups and/or ([alpha][beta]) an H-functional starter compound ([beta]) adding carbon dioxide and at least one alkylene oxide ([gamma]) adding carbon dioxide and at least two alkylene oxides, wherein these alkylene oxides can be the same as or different from the alkylene oxide or alkylene oxides added in step ([beta]), and ([delta]) adding carbon dioxide and at least one alkylene oxide, wherein this alkylene oxide or these alkylene oxides can be the same as or different from the alkylene oxides added in steps ([beta]) and ([gamma]), at least one of the alkylene oxides in step ([gamma]) having an epoxy functionality of >=2 and, in addition, in the case that no H-functional starter compound is provided in ([alpha]), step ([delta]) includes the addition

Abstract: The present invention provides a method for producing low viscosity polyether carbonate polyols having side chains. A double metal cyanide catalyst and a suspension medium, with or without an H-functional starter compound, are initially introduced as a reaction mixture, and alkylene oxides are metered into the reaction mixture in two steps. The difference between the molecular weights of the lightest and the heaviest of the alkylene oxides metered in the two steps is greater than or equal to 24 g/mol, and the lightest alkylene oxide is a C2-C4 alkylene oxide. The alkylene oxides metered in the two steps can be the same or different. The invention also relates to the low viscosity polyether carbonate polyols produced by the method and to the use thereof.

Abstract: The present invention relates to a process for preparing mercapto-crosslinked polyethercarbonate and sees polyethercarbonate polyols containing double bonds being reacted with polyfunctional mercaptans and/or sulfur with the involvement of initiator compounds.

Abstract: The present invention relates to a process for preparing branched polyether carbonate polyols, comprising the step of reacting an alkylene oxide and carbon dioxide with an H-functional starter compound in the presence of a catalyst, wherein the reaction is additionally conducted in the presence of a branching compound comprising a functional group polymerizable by ring-opening and an H-functional group. The branching compound is added during the reaction in such a way that the proportion of the branching compound in the reaction mixture obtained, at any time during the addition, is <=7.5% by weight, based on the amount of H-functional starter compound, alkylene oxide and branching compound added at this time. The invention further relates to a polyether carbonate polyol preparable by the process according to the invention, and to crosslinked polyether carbonate polymers based thereon.

Abstract: The present invention relates to a method for producing polyether carbonate polyols, the polyether carbonate polyols having electron-poor and electron-rich double bonds, said method preferably comprising the steps of (a) providing a suspending agent and/or an H-functional starter compound and a DMC catalyst, 03) adding at least one epoxide and (y) adding carbon dioxide, an epoxide that does not contain an unsaturated group, and at least two unsaturated compounds, the unsaturated compounds in method step (y) being selected from the group comprising unsaturated epoxides and unsaturated cyclic anhydrides, and one of the unsaturated compounds having an electron-rich double bond and one of the unsaturated compounds having an electron-poor double bond. The invention also relates to the crosslinking of polyether carbonate polyols, the polyether carbonate polyols having electronpoor and electron-rich double bonds, and to the crosslinked polyether carbonates obtainable therefrom.

Abstract: The present invention relates to a method for producing higher functional polyether carbonate polyols, said method preferably comprising the steps of ([alpha]) providing a DMC catalyst and: ([alpha][alpha]) a suspending agent that does contain any H-functional groups and/or ([alpha][beta]) an H-functional starter compound ([beta]) adding carbon dioxide and at least one alkylene oxide ([gamma]) adding carbon dioxide and at least two alkylene oxides, wherein these alkylene oxides can be the same as or different from the alkylene oxide or alkylene oxides added in step ([beta]), and ([delta]) adding carbon dioxide and at least one alkylene oxide, wherein this alkylene oxide or these alkylene oxides can be the same as or different from the alkylene oxides added in steps ([beta]) and ([gamma]), at least one of the alkylene oxides in step ([gamma]) having an epoxy functionality of >=2 and, in addition, in the case that no H-functional starter compound is provided in ([alpha]), step ([delta]) includes the addition

Abstract: The present invention relates to a method for producing low viscosity polyether carbonate polyols having side chains, said method comprising the steps of (a) providing either a suspending agent that does not contain any H-functional groups or an H-functional starter compound, and a catalyst, 03) adding at least one epoxide, the difference between the molecular weights of the lightest and the heaviest of the alkylene oxides added in steps 03) and (y) being greater than or equal to 24 g/mol and the lightest alkylene oxide being a C2-C4 alkylene oxide, wherein the epoxide or epoxides added in step (y) can be the same as or different from the expoxide or expoxides added in 03) and wherein step 03) is carried out between step (a) and step (y), and (y) adding carbon dioxide and at least two alkylene oxides, characterized in that the difference between the molecular weights of the lightest and the heaviest of the alkylene oxides added in step (y) is greater than or equal to 24 g/mol and the lightest alkylene oxide i